/usr/share/aclocal/ax_sip_devel.m4 is in autoconf-archive 20131101-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# http://www.gnu.org/software/autoconf-archive/ax_sip_devel.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_SIP_DEVEL([<min_version>])
#
# DESCRIPTION
#
# Searches for the sip executable and the sip include path. The sip
# include path consists of two components, one which contains the file
# qt/qtmod.sip and the other one the path to sip.h, which should be found
# in the include/pythonX.Y directory.
#
# The macro bails out if the executable or the file cannot be located.
# Otherwise it defines:
#
# SIP the path to the sip executable
# SIP_CPPFLAGS include path: -I<path-to-qt/qtmod.sip> -I<path-to-sip.h-dir>
#
# Example:
#
# AX_SIP_DEVEL
# AX_SIP_DEVEL([4.1])
#
# Requires: perl (for version string comparison)
#
# FIXME: Use AX_COMPARE_VERSION instead.
#
# LICENSE
#
# Copyright (c) 2008 Uwe Mayer <merkosh@hadiko.de>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 7
AU_ALIAS([MERK_SIP_DEVEL], [AX_SIP_DEVEL])
AC_DEFUN([AX_SIP_DEVEL],[
#-- provice --with-sip=PATH command line argument
AC_ARG_WITH([sip],
AS_HELP_STRING([--with-sip=PATH], [specify the location of the qt/qtmod.sip file]),
[sip_search_dir="$withval"],
[sip_search_dir=""])
#-- check for sip executable
AC_PATH_PROG([SIP], [sip], [no])
if test x"$SIP" == x"no"; then
AC_MSG_ERROR([failed to find required command sip])
fi
AC_SUBST([SIP])
#-- check for minimum sip version
if test x"$1" != x""; then
AC_CHECK_PROG([PERL], [perl], [$(which perl)])
if test x"$PERL" == x""; then
AC_MSG_ERROR([perl required for checking sip version])
fi
AC_MSG_CHECKING([sip version >= $1])
sip_version=$($SIP -V |cut -f 1 -d " ")
ax_sip_devel_result=$(echo "$sip_version" |perl -e '("$1" lt <STDIN>) && print "ok"')
if test x"$ax_sip_devel_result" == x""; then
AC_MSG_RESULT([$sip_version])
AC_MSG_ERROR([a newer version of sip is required])
else
AC_MSG_RESULT([ok])
fi
fi
#-- Check for SIP include path
AC_MSG_CHECKING([for sip include path])
# check for qt/qtmod.sip
for i in "$sip_search_dir" "/usr/share/sip"; do
sip_path1=`find $i -type f -name qtmod.sip -print | sed "1q"`
if test -n "$sip_path1"; then
break
fi
done
sip_path1=`echo "$sip_path1" | sed 's,/qt/qtmod.sip,,'`
if test -z "$sip_path1" ; then
AC_MSG_ERROR([cannot find qt/qtmod.sip; try --with-sip=PATH])
fi
# check for sip.h
dnl this part of the code to detect python version and include path
dnl was taken from AX_PYTHON_DEVEL macro, (rev. 2008-04-12)
python_path=`echo $PYTHON | sed "s,/bin.*$,,"`
for i in "$python_path/include/python$PYTHON_VERSION/" "$python_path/include/python/" "$python_path/" ; do
python_path=`find $i -type f -name Python.h -print | sed "1q"`
if test -n "$python_path" ; then
break
fi
done
sip_path2=`echo $python_path | sed "s,/Python.h$,,"`
if ! test -f "$sip_path2/sip.h"; then
AC_MSG_ERROR([cannot find include path to sip.h])
fi
AC_MSG_RESULT([$sip_path1,$sip_path2])
AC_SUBST([SIP_CPPFLAGS],["-I$sip_path1 -I$sip_path2"])
])
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